@annamk wrote:
Does anyone know how to actually contact support for Dropbox without logging in?
You'll need to contact Dropbox Support directly. Visit the Support page while you're NOT signed in to a Dropbox account, including these forums, and you'll see an option for Billing issues. It's best to use an Incognito or Private browsing session to make sure you're not signed in.
Also note that you won't be able to gain access to the account without access to the email address associated with it. Dropbox will cancel your subscription for you so you're no longer billed, but they won't give access to an account if you can't access the email address.